Valve.



PATENTED SEPT. 27, 1904.

J. LALLY.

VALVE.

APPLICATION FILED JUNE a. 1903.

N0 MODEL ra e/M501 CIHotuet lUNiTEn STATES Patented September 2'7, 1904.

PATENT @rrica,

VALVE.

SPECIFICATION forming part of Letters Patent N 0. 770,811, datedSeptember 27, 1904.

Application filed June 3, 1903. Serial No. 159,833. (No mcclclfi fulValve, of which the following is a specification, reference being hadtherein to the accom panying drawings.

This invention relates to valves for flushing apparatus, the principalobject of the invention being to provide, in connection with a suitabletank, a valve for admitting water to the tank, said valve and its casingbeing so constructed and related to each other that the pressure of theWater contained in a portion of the valve-casing operates by itspressure to hold the valve normally seated and closed, thereby cuttingoff the supply of water to the tank until the valve is forcibly unseatedor opened by a mechanical device specially provided for that purpose.

With the above and other objects in view the invention consists in thenovel construction, combination, and arrangement ofparts, as hereinafterfully described, illustrated, and claimed.

In the accompanying drawings, Figure 1 is a vertical sectional View of aflushing appara tus constructed in accordance with one embodiment of thepresent invention. Fig. 2 is a similar view showing the preferred formof admission-valve.

Like reference-numerals designate corresponding parts in both figures ofthe drawings.

Under the preferred embodiment of this invention as shown in Fig. 2resort is had to a tank 1 of any suitable size or description, providedwith a flushing-pipe 2, leading clownward from the bottom thereof andnormally closed and controlled by a hollow cylindrical flushing-valve 3,which is adapted to move up and down in a valve-cage 4, contained withinthe tank, as shown, said cage serving to guide the flushing-valve in itsmovements and insure the proper seating of the same. Under thearrangement shown in Figs. 1 and 2 the flushing-valve 3 is operativelyconnected with a flushing-valve lever 5, to the outer end of which isconnected an operating chain or connection 6.

At or near the top of the tank is located a Water-admission valve whichcomprises a valve-casing having inner and outer chambers, the innerchamber, 7, constituting the valve-chamber proper, while the outerchamher. 8, Iterm a water-pressure chamber, to which Water is admitteddirectly under pressure through the entrance 9, to which thewater-service pipe (not shown) is connected. The valve-casing as a wholeis substantially cylindrical, the cylindrical inner valve-chamber 7being partially surround ed by the outer waterpressure chamber 8 and thetwo chambers being divided from each other by an intervening inner wall10. This inner wall is projected at one end to form a cylindricalextension or valve-seat 11, the edge of which is adapted to meet thehead of the valve and form a tight closure between the water-pressurechamber and the valve-chamber. The end of the valve-casing is closed bymeans of a cap 12, which is screwed thereon, as shown in both figures.

The valve in the preferred embodiment of this invention comprises atubular cylindrical body 18, having at one end a reduced threaded shank14, which is received in an internallythreaded boss 15, projectingcentrally from the inside of the valve-head 16, said valvehead beingcup-shaped, as shown in Figs. 2 and 3, and of suflicient size to embracethe cylindrical extension or valve-seat 11 when the valve is. closed.Within the cup-shaped valve-head 16 is placed a packing-Washer 17, thesame being held in place by means of a nut 18, threaded upon the shank14 of the valve. The packing-washer 17 when brought to bear against thevalve-seat forms a liquidtight joint and cuts off the admission of waterto the valve-chamber. At the same end of the valve the latter isprovided with inletports 19, so that the water may pass through thetubular body of the valve and escape through outlet-ports 20 at theopposite end of the valve-body. At that end of the valvebody containingthe outlet-ports 20 the valve is provided with a longitudinal extension21, having a transverse slot therethrough to receive the short arm 22 ofan elbow-lever 23, fulcrumed at 24 on the valve-casing and constitutingthe admission-valve-operating lever, by the vibration of which the valveis opened or closed. In Fig. 2 the operating-lever 23 is provided at theouter end of its longer arm with a float 25, which rises and falls withthe level of the water in the tank, so that when the water reaches apredetermined level in the tank the lever 23 acts to close the valve,and the pressure of the water in the chamber 8 acts to hold the valvefirmly seated by occupying the space between the cup-shaped head of thevalve and that end of the valve-casing which is closed by the cap 12.

26 designates the outlet or discharge of the valve-casing, which emptiesdirectly into the tank 1.

Under the arrangement shown in Fig. 2 the water-admission valve and theflushing-valve are not coupled in any way, and therefore theadmission-valve is controlled automatically by the float 25 and theoperating-lever 23, which operate to close the valve when the waterrises, and the water-pressure in the outer chamber of the valve-casing,which acts to hold the valve closed. When the tank is emptied by openingthe flushing-valve 3, the weight of the float and operating-lever aresufficient to unseat the valve and overcome the pressure of the water inthe outer chamber of the valve-casing, thus allowing the tank to berefilled.

The arrangement shown in Fig. 1 involves exactly the same principle asthat shown in Fig. 2, the admission valve differing from Fig. 2 in thatthe valve-chamber is provided with a reduced longitudinal extension 37,in which the extended solid stem 38 of the valve works for guidance. Theopposite end of the valve-chamber is in the form of an open-work cage39, which readily admits the water to the valve-chamber when the valveis opened and which serves as a guide for the valve as it is opened andclosed. Fig. 1 illustrates the admission-valve in its simplest andcheapest form; but the construction shown in Fig. 2 is preferred.

Having thus described the invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a flushing apparatus, a water-admission valve comprising adouble-walled casing embodying an inner cylindrical valve-chamber and anouter water-pressure chamber encircling the same, the valve-chamberbeing provided with a cylindrical extension at one end forming thevalveseat, a hollow cylindrical valve-body working within and fillingthe inner valve-chamber and provided with inlet and outlet ports atopposite ends and also having a cup-shaped head at one end adapted toiit over and inclose said extension, and a valve-operating leverengaging the opposite end of the valve-body, substantially as described.

2. In a flushing apparatus, a water-admission valve comprising adouble-walled casing embodying an inner cylindrical valve-chamber and anouter water-pressure chamber encircling and eccentric to thevalve-chamber and extending at one end beyond the same, a hollowcylindrical valve-body working within and filling the innervalve-chamber and provided with inlet and outlet ports at opposite ends,a cup-shaped valve-head on one end of the valve-body adapted to fit overand inclose the extremity of the inner valve-chamber and anoperating-lever engaging the opposite end of the valvebody,substantially as described.

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN LALLY.

Witnesses:

JOHN H. BROWN, JOHN L. SANDERSON.

